<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert title="注意：只允许为第三级分类设置相关参数！" type="warning" show-icon></el-alert>
      <el-row class="cat_opt">
        <span>选择商品分类:</span>
        <el-cascader
          v-model="selectedKeys"
          :options="cateList"
          :props="cateProp"
          @change="handleChange"
        ></el-cascader>
      </el-row>

      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addManyVisible = true"
          >添加参数</el-button>
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item,i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close="dandClose(i,scope.row)"
                >{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditVisble(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addOnly.Visible = true"
          >添加属性</el-button>
          <el-table :data="onnlyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item,i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close="dandClose(i,scope.row)"
                >{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditVisble(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!-- 添加参数对话框 -->
    <el-dialog title="添加动态参数" :visible.sync="addManyVisible" width="50%" @close="addManyClosed">
      <el-form
        :model="addManyForm"
        :rules="addManyFormRules"
        ref="addManyFormRef"
        label-width="100px"
      >
        <el-form-item label="动态参数" prop="attr_name">
          <el-input v-model="addManyForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addManyVisible = false">取 消</el-button>
        <el-button type="primary" @click="addMany">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 添加静态属性 -->
    <el-dialog title="添加静态属性" :visible.sync="addOnly.Visible" width="50%" @close="addOnlyClosed">
      <el-form
        :model="addOnly.Form"
        :rules="addOnly.FormRules"
        ref="addOnlyFormRef"
        label-width="100px"
      >
        <el-form-item label="动态参数" prop="attr_name">
          <el-input v-model="addOnly.Form.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addOnly.Visible = false">取 消</el-button>
        <el-button type="primary" @click="addOnly1">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改属性 -->
    <el-dialog title="修改属性" :visible.sync="edit.Visible" width="50%" @close="editClosed">
      <el-form :model="edit.Form" :rules="edit.FormRules" ref="editFormRef" label-width="100px">
        <el-form-item label="动态参数" prop="attr_name">
          <el-input v-model="edit.Form.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="edit.Visible = false">取 消</el-button>
        <el-button type="primary" @click="edit1">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      cateList: [],
      cateProp: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      selectedKeys: [],
      activeName: 'many',
      onnlyTableData: [],
      manyTableData: [],
      addManyForm: {
        attr_name: ''
      },
      addManyVisible: false,
      addManyFormRules: {
        attr_name: [
          { required: true, message: '请输入参数名称', trigger: 'blur' }
        ]
      },
      addOnly: {
        Visible: false,
        FormRules: {
          attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' }
          ]
        },
        Form: {
          attr_name: ''
        }
      },
      edit: {
        Visible: false,
        FormRules: {
          attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' }
          ]
        },
        Form: {}
      }
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories');
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败!');
      }
      this.cateList = res.data;
    },
    async handleChange() {
      this.getParamsDate();
    },
    handleTabClick() {},
    async getParamsDate() {
      if (this.selectedKeys.length !== 3) {
        this.selectedKeys = [];
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel: 'many' } }
      );
      if (res.meta.status !== 200) {
        return this.$message.error('获取动态参数列表失败！');
      }

      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [];
        item.inputVisible = false;
        item.inputValue = '';
      });
      this.manyTableData = res.data;

      const { data: res1 } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel: 'only' } }
      );
      if (res1.meta.status !== 200) {
        return this.$message.error('获取静态属性列表失败！');
      }

      res1.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [];
        item.inputVisible = false;
        item.inputValue = '';
      });
      this.onnlyTableData = res1.data;
    },
    // 添加动态参数
    addManyClosed() {
      this.$refs.addManyFormRef.resetFields();
    },
    addMany() {
      this.$refs.addManyFormRef.validate(async valid => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addManyForm.attr_name,
            attr_sel: 'many'
          }
        );
        if (res.meta.status !== 201) {
          return this.$message.error('添加动态参数失败');
        }
        this.$message.success('添加成功!');
        this.getParamsDate();
        this.addManyVisible = false;
      });
    },
    // 添加静态属性
    addOnlyClosed() {
      this.$refs.addOnlyFormRef.resetFields();
    },
    addOnly1() {
      this.$refs.addOnlyFormRef.validate(async valid => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addOnly.Form.attr_name,
            attr_sel: 'only'
          }
        );
        if (res.meta.status !== 201) {
          return this.$message.error('添加动态参数失败');
        }
        this.$message.success('添加成功!');
        this.getParamsDate();
        this.addOnly.Visible = false;
      });
    },
    // 修改
    editClosed() {
      this.$refs.editFormRef.resetFields();
    },
    async showEditVisble(attrId) {
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attrId}`,
        {
          params: { attr_sel: this.activeName }
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数列表失败!');
      }
      this.edit.Form = res.data;
      this.edit.Visible = true;
    },
    async edit1() {
      this.$refs.editFormRef.validate(async valid => {
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.edit.Form.attr_id}`,
          { attr_name: this.edit.Form.attr_name, attr_sel: this.activeName }
        );
        if (res.meta.status !== 200) {
          return this.$message.error('修改失败！');
        }
        this.$message.success('修改成功！');
        this.getParamsDate();
        this.edit.Visible = false;
      });
    },
    // 删除
    async removeParams(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err);
      if (confirmResult !== 'confirm') {
        return this.$message.error('已取消的删除!');
      }
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${id}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败!');
      }
      this.$message.success('删除成功!');
      this.getParamsDate();
    },
    async AttrId(row) {
      const { data: res } = await this.$http.put(
        `categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: row.attr_sel,
          attr_vals: row.attr_vals.join(' ')
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error('修改失败！');
      }
      this.$message.success('修改成功!');
    },
    async handleInputConfirm(row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = '';
        row.inputVisible = false;
        return;
      }
      row.attr_vals.push(row.inputValue.trim());
      row.inputValue = '';
      row.inputVisible = false;
      this.AttrId(row);
    },
    showInput(row) {
      row.inputVisible = true;
      // nextTick  页面上元素被重新渲染结束之后 才会回调函数里面的代码
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus();
      });
    },
    dandClose(i, row) {
      row.attr_vals.splice(i, 1);
      this.AttrId(row);
    }
  },
  computed: {
    isBtnDisabled() {
      if (this.selectedKeys.length !== 3) {
        return true;
      }
      return false;
    },
    cateId() {
      if (this.selectedKeys.length === 3) {
        return this.selectedKeys[2];
      }
      return null;
    }
  }
};
</script>

<style lang="less" scoped>
.el-cascader {
  margin: 15px 0 0 15px;
}
.el-tag {
  margin: 10px;
}
.input-new-tag {
  width: 120px;
}
</style>
